000 FZNT31 KNHC 171508 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1108 AM EDT Fri Mar 17 2023 Marine Weather HF Voice Broadcast for the Tropical N Atlantic from 07N to 22N between 55W and 64W, the SW N Atlantic S of 31N W of 65W including Bahamas, and the Caribbean Sea. Seas given as significant wave height, which is the average height of the highest 1/3 of the waves. Individual waves may be more than twice the significant wave height. Synopsis for Caribbean Sea and Tropical N Atlantic from 07N to 19N between 55W and 64W .SYNOPSIS...A cold front extends from the central Atlantic through the northern Leeward Islands, passing just south of Puerto Rico to south of Dominican Republic. This front will sink farther southward through tonight to near 15N on Sat before gradually dissipating by Sun. Fresh to strong ENE to E winds behind the front will persist across the north-central and northeastern basin, including the Windward and Mona Passages through Sat night. Large N swell will impact both passages and the northeastern basin through Sat night before subsiding Sun. Another cold front is expected to enter the northwestern basin Mon then stall and dissipate Mon night, causing seas to build near the Yucatan Channel. Fresh easterly winds north of Colombia will also pulse to strong every night through Tue night. NW Caribbean W of 85W .THIS AFTERNOON...SE winds 10 to 15 kt. Seas 4 to 6 ft. .TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...SW winds less than 10 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds less than 10 kt. Seas 4 to 6 ft. .MON...E winds less than 10 kt. Seas 6 to 8 ft. .MON NIGHT...E winds less than 10 kt. Seas 6 to 8 ft. .TUE...E winds less than 10 kt. Seas 6 to 8 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. Caribbean N of 15N between 72W and 85W .THIS AFTERNOON...E winds 10 to 20 kt. Seas 5 to 7 ft. .TONIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...SE winds 10 to 15 kt. Seas 5 to 7 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft. .SUN...SE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .MON...E winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. Caribbean from 11N to 15N W of 72W .THIS AFTERNOON...E winds 15 to 20 kt within 90 nm of coast of Colombia, and E 10 to 20 kt elsewhere. Seas 4 to 6 ft. .TONIGHT...E winds 15 to 25 kt within 90 nm of coast of Colombia, and E 10 to 20 kt elsewhere. Seas 4 to 6 ft. .SAT...E winds 15 to 25 kt within 90 nm of coast of Colombia, and E 10 to 20 kt elsewhere. Seas 5 to 7 ft. .SAT NIGHT...E winds 15 to 25 kt within 90 nm of coast of Colombia, and E 10 to 20 kt elsewhere. Seas 5 to 7 ft. .SUN...E winds 10 to 20 kt. Seas 5 to 7 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .MON...E winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .TUE...E winds 10 to 20 kt. Seas 6 to 8 ft. .TUE NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. SW Caribbean S of 11N .THIS AFTERNOON...NE winds less than 10 kt. Seas 3 to 5 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...NE winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 4 to 6 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...NE winds 10 to 15 kt. Seas 5 to 7 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .MON...NE winds 10 to 15 kt. Seas 5 to 7 ft. .MON NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .TUE...NE winds 10 to 15 kt. Seas 6 to 8 ft. .TUE NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. Caribbean between 64W and 72W .THIS AFTERNOON...NE winds 10 to 20 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Seas 3 to 4 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .TONIGHT...NE winds 20 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 6 to 8 ft elsewhere. .SAT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 6 to 8 ft elsewhere. .SAT NIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 6 to 8 ft elsewhere. .SUN...E winds 10 to 20 kt. Seas 6 to 8 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .MON...E winds 10 to 20 kt. Seas 6 to 8 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .TUE...E winds 10 to 20 kt. Seas 6 to 8 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .THIS AFTERNOON...E winds less than 10 kt, shifting to NE in the afternoon. Seas 6 to 9 ft. .TONIGHT...NE winds 10 to 20 kt. Seas 7 to 10 ft. .SAT...NE winds 10 to 20 kt. Seas 8 to 11 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 8 to 11 ft. .SUN...E winds 10 to 20 kt. Seas 8 to 11 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .MON...E winds 10 to 20 kt. Seas 7 to 10 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .TUE...E winds 10 to 20 kt. Seas 6 to 9 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .THIS AFTERNOON...E winds 10 to 15 kt. Seas 5 to 7 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .SAT...E winds 10 to 15 kt. Seas 6 to 9 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .SUN...E winds 10 to 20 kt. Seas 7 to 10 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .MON...E winds 10 to 20 kt. Seas 7 to 10 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .TUE...E winds 10 to 20 kt. Seas 6 to 9 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...1022 mb high pressure is centered between the northern Bahamas and Bermuda, building behind a cold front currently south of the area moving into the northern Leeward Islands. Fresh to strong NW to NE winds behind the front will continue across the waters east of 60W, and northeast of the Virgin Islands through this morning. Large N swell behind this front will spread southward to 20N and east of 70W. The next cold front is expected to move off northeastern Florida on Sat, bringing fresh to strong southerly winds ahead of it Fri evening through Sat. This front is expected to reach from 31N72W to Florida Straits late Sun before stalling. ATLC waters from 27N to 31N W of 77W .THIS AFTERNOON...S winds 10 to 20 kt. Seas 4 to 5 ft. .TONIGHT...S winds 15 to 25 kt. Seas 6 to 8 ft. .SAT...SW winds 15 to 25 kt. Seas 6 to 9 ft. .SAT NIGHT...NW winds 10 to 20 kt. Seas 5 to 7 ft. .SUN...N winds 10 to 20 kt. Seas 4 to 6 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .MON...NE winds 15 to 25 kt. Seas 5 to 7 ft. .MON NIGHT...NE winds 20 to 30 kt. Seas 6 to 9 ft. .TUE...E winds 15 to 25 kt. Seas 7 to 10 ft. .TUE NIGHT...NE winds 10 to 20 kt. Seas 7 to 10 ft. ATLC waters from 27N to 31N between 65W and 77W .THIS AFTERNOON...W of 70W, S winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Elsewhere, NW winds less than 10 kt. Seas 6 to 9 ft W of 70W, and 9 to 12 ft elsewhere. .TONIGHT...W of 70W, S winds 10 to 20 kt. Elsewhere, NW winds less than 10 kt, shifting to S after midnight. Seas 6 to 8 ft W of 70W, and 7 to 10 ft elsewhere. .SAT...W of 70W, S winds 10 to 20 kt. Elsewhere, S winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 6 to 8 ft. .SAT NIGHT...S winds 10 to 20 kt. Seas 6 to 8 ft. .SUN...S winds 10 to 20 kt. Seas 6 to 8 ft. .SUN NIGHT...S winds 10 to 15 kt. Seas 5 to 7 ft. .MON...SE winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 6 to 9 ft. .TUE...E winds 10 to 20 kt. Seas 7 to 10 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. Bahamas N of 22N .THIS AFTERNOON...SE winds 10 to 15 kt. Seas 4 to 6 ft. .TONIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .SAT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...SE winds 10 to 15 kt. Seas 3 to 4 ft. .SUN NIGHT...SE winds 10 to 15 kt. Seas 3 ft. .MON...SE winds less than 10 kt. Seas 3 ft. .MON NIGHT...E winds less than 10 kt. Seas 3 ft. .TUE...E winds less than 10 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .TUE NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .THIS AFTERNOON...E winds 10 to 15 kt W of 70W, and NE less than 10 kt elsewhere. Seas 7 to 9 ft W of 70W, and 9 to 12 ft elsewhere. .TONIGHT...E winds 10 to 15 kt. Seas 6 to 9 ft W of 70W, and 8 to 11 ft elsewhere. .SAT...SE winds 10 to 15 kt. Seas 6 to 9 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 6 to 8 ft. .SUN...SE winds 10 to 15 kt. Seas 5 to 7 ft. .SUN NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft. .MON...SE winds 10 to 15 kt. Seas 5 to 7 ft. .MON NIGHT...SE winds 10 to 15 kt. Seas 5 to 6 ft. .TUE...SE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 5 to 6 ft. .TUE NIGHT...SE winds less than 10 kt. Seas 5 to 6 ft. ATLC waters S of 22N W of 65W .THIS AFTERNOON...E winds 10 to 20 kt. Seas 7 to 10 ft. .TONIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .SAT...E winds 10 to 20 kt. Seas 6 to 9 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .SUN...E winds 10 to 15 kt. Seas 5 to 7 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .MON...E winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. ATLC waters from 19N to 22N between 55W and 65W .THIS AFTERNOON...NE winds 10 to 20 kt. Seas 8 to 11 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 10 to 11 ft. .SAT...E winds 15 to 20 kt. Seas 9 to 11 ft. .SAT NIGHT...E winds 15 to 20 kt. Seas 8 to 11 ft. .SUN...E winds 15 to 20 kt. Seas 8 to 10 ft. .SUN NIGHT...E winds 15 to 20 kt. Seas 7 to 10 ft. .MON...E winds 15 to 20 kt. Seas 7 to 9 ft. .MON NIGHT...E winds 15 to 20 kt. Seas 7 to 9 ft. .TUE...E winds 15 to 20 kt. Seas 6 to 9 ft. .TUE NIGHT...E winds 15 to 20 kt. Seas 6 to 9 ft.